Can be used as a side table or stool. Eco-friendly: Cork is a natural product harvested from trees in the Mediterranean basin of Spain and Portugal. While many people think cork is a new technology, it has actually been used for t...Can be used as a side table or stool. Eco-friendly: Cork is a natural product harvested from trees in the Mediterranean basin of Spain and Portugal. While many people think cork is a new technology, it has actually been used for thousands of years.